Astronomy:NGC 3891

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NGC 3891
File:NGC 3891 SDSS.jpg
NGC 3891 imaged by SDSS
Observation data (J2000 epoch)
ConstellationUrsa Major
Right ascension 11h 48m 03.3648s[1]
Declination+30° 21′ 33.621″[1]
Redshift0.020980±0.00000661[1]
Helio radial velocity6,290±2 km/s[1]
Distance330.46 ± 14.72 Mly (101.320 ± 4.514 Mpc)[1]
Group or clusterComa Cluster
Apparent magnitude (V)13.3g[1]
Characteristics
TypeSbc[1]
Size~221,100 ly (67.79 kpc) (estimated)[1]
Apparent size (V)1.54′ × 1.15′[1]
Other designations
UGC 6772, MCG+05-28-031, PGC 36832[1]

NGC 3891 is a large spiral galaxy in the constellation of Ursa Major. Its velocity with respect to the cosmic microwave background is 6,581±20 km/s, which corresponds to a Hubble distance of 316.6 ± 22.2 Mly (97.06 ± 6.80 Mpc).[1] However, 10 non-redshift measurements give a slightly farther mean distance of 330.46 ± 14.72 Mly (101.320 ± 4.514 Mpc).[2] It was discovered by German-British astronomer William Herschel on 3 February 1788.[3][4]

NGC 3891 is a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.[5][6] It is also a radio galaxy, i.e. it has giant regions of radio emission extending well beyond its visible structure.[7][6]

NGC 3891 is a member of the Coma cluster.[8][6]

Supernovae

Two supernovae have been observed in NGC 3891:

  • SN 2006or (Type Ia, mag. 16.3) was discovered by Tim Puckett and A. Kroes on 18 November 2006.[9][10]
  • SN 2018bdv (Type II-P, mag. 18.53) was discovered by Gaia Photometric Science Alerts on 29 April 2018.[11]

See also

References

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 "Results for object NGC 3891". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+3891. 
  2. ↑ "Distance Results for NGC 3891". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+3891. 
  3. ↑ Herschel, William (1789). "Catalogue of a Second Thousand of New Nebulae and Clusters of Stars; with a Few Introductory Remarks on the Construction of the Heavens". Philosophical Transactions of the Royal Society of London 79: 212–255. doi:10.1098/rstl.1789.0021. Bibcode: 1789RSPT...79..212H. 
  4. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 3891". https://cseligman.com/text/atlas/ngc38a.htm#3891. 
  5. ↑ Toba, Y.; Oyabu, S.; Matsuhara, H.; Malkan, M. A.; Gandhi, P.; Nakagawa, T.; Isobe, N.; Shirahata, M. et al. (2014). "Luminosity and Redshift Dependence of the Covering Factor of Active Galactic Nuclei viewed with WISE and Sloan Digital Sky Survey". The Astrophysical Journal 788 (1): 45. doi:10.1088/0004-637X/788/1/45. Bibcode: 2014ApJ...788...45T. 
  6. ↑ 6.0 6.1 6.2 "NGC 3891". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+3891. 
  7. ↑ Lin, Yen-Ting; Huang, Hung-Jin; Chen, Yen-Chi (2018). "An Analysis Framework for Understanding the Origin of Nuclear Activity in Low-power Radio Galaxies". The Astronomical Journal 155 (5): 188. doi:10.3847/1538-3881/aab5b4. Bibcode: 2018AJ....155..188L. 
  8. ↑ Fossati, M.; Gavazzi, G.; Savorgnan, G.; Fumagalli, M.; Boselli, A.; Gutiérrez, L.; Hernández Toledo, H.; Giovanelli, R. et al. (2013). "Hα3: An Hα imaging survey of HI selected galaxies from ALFALFA. IV. Structure of galaxies in the Local and Coma superclusters". Astronomy and Astrophysics 553: A91. doi:10.1051/0004-6361/201220915. Bibcode: 2013A&A...553A..91F. 
  9. ↑ Puckett, T.; Kroes, A.; Quimby, R.; Castro, F.; Joubert, N.; Li, W. (2006). "Supernovae 2006or, 2006os, 2006ot". International Astronomical Union Circular (8779): 2. Bibcode: 2006IAUC.8779....2P. http://www.cbat.eps.harvard.edu/iauc/08700/08779.html#Item2. 
  10. ↑ "SN 2006or". IAU. https://www.wis-tns.org/object/2006or. 
  11. ↑ "SN 2018bdv". IAU. https://www.wis-tns.org/object/2018bdv. 

Coordinates: Sky map 11h 48m 03.3648s, +30° 21′ 33.621″



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